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Rewterz
Rewterz Threat Advisory – CVE-2021-25269 – Sophos Intercept X Advanced and Exploit Prevention
November 29, 2021
Rewterz
Rewterz Threat Advisory – Nanocore Rat – Active IOCs
November 29, 2021

Rewterz Threat Alert – FormBook Malware – Active IOCs

Severity

Medium

Analysis Summary

FormBook is an information-stealer malware that has been active since 2016. The info-stealer malware’s capabilities include stealing credentials, capturing screenshots of victim’s desktop, monitoring clipboard, keystroke logging, clearing browser cookies, downloading and executing files, uploading and removing bots, launching commands via ShellExecute, downloading and unpacking ZIP archive, rebooting and shutting down the system. The attackers behind these email campaigns used a variety of distribution techniques to deliver the FormBook info-stealer, including PDFs, Office Documents, ZIP, RAR, etc. Some of these files are related to quotation requests.

Impact

  • Credential theft
  • Keystroke logging
  • Data Theft

Indicators of Compromise

MD5

  • 76050e409dfcb139fa3470d9ee52c96b
  • 809931b2a898bd266971fa18c9a3b42b
  • 03655e333a190778a03ffbebf6af2324
  • 6eeede5fa5bdbd46bb362fe50d2d097c
  • 0d69b4c64d3aecfd32cbb5204f3ef6a8

SHA-256

  • 1b23cdae890d1810c8c5333e1e594fd200bd37d7e8c70c69862548893d7973b9
  • 864492d660b1978cc4b0ceb1008c334704d049cb77f98ddf8179660c7f2125cd
  • b4a712aed314084e4266d6d06b349990754608981931b08deb566aaacca22e4e
  • 05e53ece9d0242cbf17466c6746fcad32c0b97f8dd1dbf07fda951802e9bdeba
  • 7e1902c99be3570624c34b1a087ca24ed8d47430374b6a2366d0432cb3e2a423

SHA-1

  • feb6237400d9093ead52cee86ea008533648ed89
  • b1f2147cff3d40aa80c1eceeaabc0d6f4be6581e
  • 4679f6f1398ed39524b58ee3198200e1fabf8938
  • 73b004e35b6a1196bbc86bca7bc0486b6cbe3d83
  • 1306030638e1e2c7c60cb93d7efef6ff5b41f803

Remediation

  • Block all threat indicators at your respective controls.
  • Search for IOCs in your environment.